package com.test.algorithm;

import java.security.MessageDigest;  

import com.by.common.conf.WxConfMager;
import com.by.common.cont.WxConst; 

/**
 * 采用MD5加密解密 
 */
public class MD5Util {

	/**
	 *  MD5加码 生成32位md5码 
	 */
	public static String string2MD5(String inStr){  
        MessageDigest md5 = null;  
        try{  
            md5 = MessageDigest.getInstance(WxConfMager.getProperty(WxConst.WX_OFFICIAL_CLUSTER_HASH_RENTER_ROOM_TIMESTAMP_SIGN));  
        }catch (Exception e){  
            System.out.println(e.toString());  
            e.printStackTrace();  
            return "";  
        }  
        char[] charArray = inStr.toCharArray();  
        byte[] byteArray = new byte[charArray.length];  
        
        for (int i = 0; i < charArray.length; i++){  
            byteArray[i] = (byte) charArray[i];
        }
        byte[] md5Bytes = md5.digest(byteArray);  
        StringBuffer hexValue = new StringBuffer();  
        for (int i = 0; i < md5Bytes.length; i++){  
            int val = ((int) md5Bytes[i]) & 0xff;  
            if (val < 16)  
                hexValue.append("0");  
            hexValue.append(Integer.toHexString(val));  
        }  
        return hexValue.toString();  
    }  
	
	/**
	 * 加密解密算法 执行一次加密，两次解密 
	 */
	public static String convertMD5(String inStr){  
		  
        char[] a = inStr.toCharArray();  
        for (int i = 0; i < a.length; i++){  
            a[i] = (char) (a[i] ^ 't');  
        }  
        String s = new String(a);  
        return s;  
    }  
}
